CONDENSER Russian patent published in 1995 - IPC

FIELD: optical instrumentation. SUBSTANCE: condenser has ellipsoid and spherical mirrors arranged in sequence and turned with concave mirror surface to face each other, out-of-axis ellipsoid mirror and frame window. First focus of ellipsoid mirror matches center of curvature of spherical mirror. Arc lamp is placed uniaxially to optical axis of condenser in first focus of ellipsoid mirror. First focus of out-of-axis mirror is matched with second focus of ellipsoid mirror and frame window is displaced relative to second focus of out-of-axis ellipsoid mirror along optical axis of condenser towards out-of-axis ellipsoid mirror. EFFECT: enhanced condensing efficiency. 1 dwg